package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.apache.poi.util.PackageHelper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        //获取传过来的 数据 然后查数据库
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);//类名点出来
        }
        //账号用户是否存在  再判断密码
        //密码比对
        //  后期需要进行md5加密，然后再进行比对-----完善功能  明文密码加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {//不写0  魔法值
            //账号被锁定 0禁用 1正常
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        //1、将参数EmployeeDTO对象转换为Employee对象
        Employee employee = new Employee();
        //对象属性值拷贝 用BeanUtils.copyProperties() 前提  想通属性名
        BeanUtils.copyProperties(employeeDTO, employee);
        //补全属性值
        //默认密码---密文
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //默认状态
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //TODO 创建人,目前先写死  用Threadlocal
        //employee.setCreateUser(10L);
        employee.setCreateUser(BaseContext.getCurrentId());
        //TODO 修改人
        //employee.setUpdateUser(10L);
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.addEmployee(employee);
    }
//  员工分页查询
    @Override
    public PageResult getEmps(EmployeePageQueryDTO dto){
        //分页插件
        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        //sql语句
        Page<Employee> page = employeeMapper.getEmps(dto);
        long  total = page.getTotal();
        List<Employee > employeeList = page.getResult();

        return new PageResult(total,employeeList);
    }

    @Override
    public void startOrStopStatus(Integer status, Long id) {
        employeeMapper.startOrStopStatus(status,id);
    }
}
